Guidance

TAG unit M5-3 supplementary economic modelling

Transport analysis guidance (TAG) on applying supplementary economic models in transport appraisals.

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Details

This document gives modelling principles for supplementary economic models in transport appraisals.

The was published in November 2024.

TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions to support a business case.

Updates to this page

Published 31 May 2018
Last updated 29 May 2025 show all updates
  1. TAG unit M5-3 updated.

  2. Added 'Forthcoming change: supplementary economic modelling'.

  3. TAG unit M5-3 supplementary economic modelling updated.

  4. Added 'Forthcoming change: update to wider economic impacts'.

  5. First published.

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